VOCABULAERY

the amount of matter in an object

• atom

• volume

• compound

• mass

the amount of space an object takes up.

• mass

• volume

• atmosphere

• efficient

a force of attraction between two objects.

• gravity

• measure

• differentiate

• chemical change

a process in which a new kind of matter forms.

• efficient

• conservation of  matter

• chemical change

• atmosphere

able to produce the effect wanted without wasting time or energy.

• efficient

• gravity

• apparent

• circulation

to organize into groups based on a system.

• classify

• community

• measure

• observe

when two or more organisms need the same limited resource to survive.

• interdependent

• differentiate

• competition

• circulation

to use your senses to gather information.

• observe

• obtain

• measure

• consumer